GES CHARACTERS OF TRIBES AND GENERA. 
nevertheless very distinct not only in the spore cases being 
destitute of a ring, but also in the vernation being terminal 
and articulate with the axis of development, similar to 
certain species of Cyathea already noticed. This articula- 
tion must not, however, be confounded with the Eremo- 
bryous division Polypodiace, in which the fronds are pro- 
duced solitary on the sides of the axis. In most of the 
 annulate Ferns the roots are hard and wiry, often spreading 
over and clinging to the surface on which they grow, 
. whereas in the exannulate the roots are soft, sticky, and 
fleshy, often penetrating deeply into the soil, in that 
respect being analogous to many of the endogenous orders, 
such as QCycadem, Oyclanthee, Amaryllevm, and Liliace. 
They are generally large growing Ferns consisting of 
about twenty or thirty species, arranged under the follow- 
ing genera :— 
213,—Anaiopreris, Hoffm. (1793). 
Vernation fasciculate, erect, sub-arboroid; each frond 
rising from between two fleshy stipuleform appendages; 
base of the stipes clavate, pseudo-articulated with the axis. 
Fronds 6 to 18 feet in length, spreading, bi-pinnate ; pinne - 
and pinnules articulated with the rachis. Veins simple or 
. forked, free. Receptacles oblong, linear, terminal. Spo- 
rangia 6 to 24, bi-serial, sessile, free, opening by a slit on 
. the inner side. Sori oblong, laterally contiguous (con- 
~ fluent), forming a broad, sub-marginal transverse band di eee 
. Sporangia, T 
Type. Angiopteris evecta, Hoffm. S 
Ilust. Hook. and Bauer Gen. Fil, t. 10; Moore Ind. - 
Fil., p. 96 A.; J. Sm. Ferns, Brit. and For., fig. 1825 es 
. Hook. Syn. Fil., t. 9, fig. 69. ; 
Os. —This genus is represented throughout the tropical | 
